I'm working on a React hook form project and I'm using react-dropzone to upload some images, I want to display a React hook form's ERROR when the type of file is not an image, I can console.log Error but I don't know how to use SetError and block form submition until the file format is accepted..
This is my Sandbox code
Any idea please ?
The easiest way to block form submission is to use the disabled property of the input when the length of the fileRejections array is greater than zero:
<input type="submit" disabled={fileRejections.length > 0}/>
The whole form code is:
<form onSubmit={handleSubmit(onSubmit)}>
<section className="container">
<div {...getRootProps({ className: "dropzone" })}>
<input {...getInputProps()} name="upload" />
<p>Drag 'n' drop some files here, or click to select files</p>
<em>(Only *.jpeg and *.png images will be accepted)</em>
</div>
<aside>
<h4>Accepted files</h4>
<ul>{acceptedFileItems}</ul>
<h4>Rejected files</h4>
<ul>{fileRejectionItems}</ul>
</aside>
</section>
<input type="submit" disabled={fileRejections.length > 0}/>
</form>
Related
I am using the Angular Component library which includes material-input. Is there a way to disable input auto validate when changing or emptying the material-input? Meaning that I want to only validate the form upon submit.
Plus the onSignInPressed() function is not getting triggered on submit despite that the material-button is of type submit.
<div class="container">
<form (ngSubmit)="onSignInPressed()" #signInForm="ngForm">
<div>
<material-input
floatingLabel type="email"
label="E-mail"
[(ngModel)]="email"
ngControl="email"
required></material-input>
</div>
<div>
<material-input
floatingLabel type="password"
label="Password"
[(ngModel)]="password"
ngControl="pass"
required></material-input>
</div>
<div class="w-100">
<material-button class="mx-0 btn-primary w-100 margin-zero" type="submit"
[disabled]="!signInForm.form.valid">
Sign In
</material-button>
</div>
</form>
</div>
You can try to use a different value accessor on the material-input, however you won't be able to validate the form on submit.
With changeUpdate, validation will be triggered on blur or when press ENTER
<material-input changeUpdate [(ngModel)]="value"
Docs
About the material-button, there is an issue on github with a hacky solution.
You can also try to add an hidden input
<input type="submit" hidden />
I need to build a confirm button for the images being dropped in Dropzone, which, on press will store the image in a variable and then move on. What function do I call to get this image?
I currently only have this set up:
<div id=dropzone >
<form action="/file-upload" class="dropzone">
<div class="fallback">
<input name="file" type="file" multiple />
</div>
</form>
<img id=confirmbtn src="/images/confirm.png" alt="Confirm">
<img id=cancelbtn src="/images/cancel.png" alt="Click me to remove the file." data-dz-remove />
</div>
I am looking to store the image as a string
I did a ctrl+f (data-dz-thumbnail) on dropzone.js and found this in the preview:
<-this is ONE LINE BTW->
previewTemplate: "<div class=\"dz-preview dz-file-preview\">\n
<div class=\"dz-image\">
<img id='data-dz-thumbnail'data-dz-thumbnail />
</div>\n <div class=\"dz-details\">\n
<div class=\"dz-size\"><span data-dz-size></span></div>\n
<div class=\"dz-filename\"><span data-dz-name></span></div>\n
</div>\n
<div class=\"dz-progress\"><span class=\"dz-upload\" data-dz-uploadprogress></span></div>\n
</div>",
I then changed the whole image thumbnail element to this:
<img id='data-dz-thumbnail'data-dz-thumbnail />
//I added the id='data-dz-thumbnail' part
Then i added an event listener to js
something.onclick....{
var image=document.getElementById('data-dz-thumbnail').src
}
And that is literally it
I would like to let the user pick a time using a uib-timepicker tag and POST the result to my server (with a submit button for example).
<form class="simple_form vertical_form"
data-type="json" id="my_form"
action="url_to_post"
accept-charset="utf8"
data-remote="true"
method="post">
<div class="field">
<uib-timepicker
name="my_time"
ng-model="event.my_model"
hour-step="1"
minute-step="15"
show-meridian="true">
</uib-timepicker>
</div>
<div>
<input type="submit" value="Validate" class="btn btn-success">
</div>
</form>
But when I check to content of the POST method it is empty (I don't get the "my_time" key as I would expect. I guess it is because a "uib-timepicker" does not exactly work as an input field. But I feel like there must be a way to POST the content of that tag.
Thanks for helping!
I solved this issue by adding hidden input elements with binding to the time picker:
<uib-timepicker ng-model="ServiceRestoredTime" name="ServiceRestoredTime" ng-change="changed()" hour-step="hstep" minute-step="mstep" show-meridian="false" show-spinners="false"></uib-timepicker>
<input type="hidden" name="ServiceRestoredTimeParam" value="{{ServiceRestoredTime | date:'HH:mm' }}">
I have a fairly simple form created in a partial view and loading the form on a jquery dialog. The view is tightly bound to a model. When the user clicks on the submit button with out entering any inputs, I need to show the validation messages.
<div>
<form method="post" enctype="multipart/form-data" id="ssimForm" action="Home/ProcessUploadedFile"
onsubmit="return false;">
<div>
<h3>
Select the file to be uploaded :</h3>
<span>
<input type="file" name="UploadFileName" id="UploadFileName" /></span>
</div>
<div>
<h3>
Select the date range :</h3>
<span class="uslabel">From Date(MM/dd/yyyy): </span>
<input class="usdate" id="usfromdate" name="StartDate" type="date" />
<span class="uslabel">To Date(MM/dd/yyyy): </span>
<input class="usdate" id="ustodate" name="EndDate" type="date" />
</div>
<div>
<br />
<input type="submit" id="submitButton" name="submitButton" value="Process File" />
</div>
#Html.ValidationSummary()
<div class="message-success">
<span>#ViewBag.Confirmation</span>
</div>
<div class="message-error">
<span>#ViewBag.Error</span>
</div>
</form>
</div>
Now comes the actual problem. when I submit the form I am able to see the validationSummary object populated with the messages, but they are not getting rendered on the screen.
I am able to see the messages if I replace the content of the dialog with the response from the jquery ajax call, that fetches the entire view from the server side. I do not want to take this approach as I beleive this is not the correct way to return validation summary in MVC.
Am I missing something? Any help is appreciated.
I don't know why you don't have the #using (Html.BeginForm()) { } block.
Here is my blog post for a quick and easy way to set up Validation Summary + Unobtrusive Validation for MVC3+.
http://geekswithblogs.net/stun/archive/2011/01/28/aspnet-mvc-3-client-side-validation-summary-with-jquery-validation-unobtrusive-javascript.aspx
.I have a div tag that is also divided into two divs. here is the code:
<div>
<div id="search">
<form id="try" method="post">
Batch: <input id="batch" name="batch" type="text"/>Dept: <input id="dept" name="dept" type="text"><input type="submit"/>
</div>
<div id="receiver">
</div>
</div>
I have placed a search option in the div named "search" using post method. what i want to do is that when i click the submit button the page to receive the values will appear on the div named "receiver".
is this possible? if it is, please help..
The ways you have for this are:
1 - The simplest - instead of a div - use an IFrame like this
<div id="search">
<form id="try" method="post" target="receiver" action="url-to-server-Page">
Batch: <input id="batch" name="batch" type="text"/>
Dept: <input id="dept" name="dept" type="text" />
<input type="submit"/>
</form>
</div>
<iframe name="receiver" id="receiver"></iframe>
</div>
The disadvantage in this case is that the search-result that come in this case from url-to-server-page - is a complete and independent HTML page that is nested in your search page.
It is not effected by styles of the parent page, and the communication between them for JavaScript operations is rather combersome.
2 - with some JavaScript skills you can use AJAX.
There are many libraries on the net that can help you do it in very few lines of code.
jQuery is the simplest, although it's the one I like least...
http://jquery.com/
3 - use a full round-trip
<div id="search">
<form id="try" method="post" target="receiver" action="url-to-server-Page">
Batch: <input id="batch" name="batch" type="text"/>
Dept: <input id="dept" name="dept" type="text" />
<input type="submit"/>
</form>
<div id="receiver">
<?php if (isset($_POST['batch']) && isset($_POST['dept'])){
//display search results here.
}
?>
</div>
</div>
You want what's called "AJAX." There are a number of libraries available, such as Google Web Toolkit or jQuery to accomplish what you want.
Can you clarify? Is this a php page and you are posting to self or are you looking to use ajax to populate the div?
If it is php and you post to self then you can simply check if the post has been made inside that div :
<div id="receiver">
<?php if (isset($_POST['batch']) && isset($_POST['dept'])){
//display search results here.
}
?>
</div>